Wrench.



P. W. HODGKINSON.

WRENCH.

APPLICATION FILED NOV. 8, 1915- Patented Feb. 22,1916.

ficggo o .5- lFigillo 6 ii 2 I z z wa llnwmmmm @vwj i ATE T rnnoY wQnonsx-rnson, or noonEs'rEn, NEW YonK. I

To (122mm it may concern: V

-' Be it known that I, PnRoY W.

1 dent ofRochestenin the county of Monroe and Stateof New York, have invented certain new and useful Improvements in Wrenches, of which the I The'object of thisinvention is to produce a'wrench which may. be conveniently used to hold-a bolt against rotation while the nut isbeing removed therefrom, or to hold the nut while the boltis being removed, in locations wl1ere1access to the "bolt'or nut "witlran ordinarywrench or spanner is in-' convenient, or where the arrangement of.

parts is suchthat it is inconvenient for one person to manipulate simultaneously the two wrenches required for rotating one member and holding the other. 1

To the foregoing end I employ a wrench which comprises a head, formed as a socket or otherwise, which is adapted to receive the bolt-head or the nut, and means connected with or attached to this head and adapted to engage adjacent stationary parts or'bodies, so as both to hold the head of the wrench in engagement with the nut or the bolt-head, and'to. prevent rotation of the wrench. Since the inventionis adapted particularly for use in connection with bolts or nuts which .are accessible only from beneath certain parts of an automobile, the means for holding the wrench in engagement with the nut or the bolt are arranged, in the preferred embodiment of the invention, to eX- tend'to and engage the floor -'surface or ground beneath the automobile, while the means for preventing rotation of the wrench have the form of a lug or projection adapted to engage a part of the automobile which is located alongside the bolt.

Other features of the invention will be' set forth hereinafter, in connection with the dc scription ofthe wrench illustrated in the accompanying drawings.

In the drawings :--Figure 1 is a side-elevation of a wrench embodying the present invention Fig. 2 is an elevation, partly in vertical section, looking from left to right in Fig. 1; Fig. 3 is anend-view of the wrench; and Fig. 4 is a view showing the manner in which the wrench 1s used 1n confollowing is a speci Y 'wnnncn.

Specification of Letters Patent. i Patnted F'eb, 1916,

Application filed November 8, 19 15. .Serial No; 60,427.

- nection with'an automobile, of which cer- 7 Honcnrnj somaciti'zen ofthe United States, and res -v tainpartsonly are shown. ,7 a

. The invention is; illustrated .as 'embodied J in a wrench of which the head is in the form lofta socket-5 adapted toreceive and hold a which is fixed transversely in the stem and arranged to" slide in verticalslots in the shank. v

Fig. a shows the manner in which the wrench is used in removing'o'r replacing the bolts which connect the upper and lowerv members of the crank-case of" the engine'in an automobile. Such bolts, at least as employed in certain well known automobiles,

movement of the stem is limited by apin 7 O,

are impossible of access by one person simul-.

taneously from above and below, so that in manipulating them the services of two per? sons are usually required. With the present wrench, however, the services of one person I I.

may be dispensed with.

which is to be removed .or replaced, and the head and shank are then pressed down wardly, thus compressing the spring 9, so that they may be passed beneath the nut or Zthe head of the bolt, as the case may be, and

For thispurpose the stem 8 of the wrench is engaged withthe floor-surface directly be'neath'the bolt.

then allowed to rise so as to bringthe head 5 of the wrench into engagement with the nut or bolt. The wrench will then automatically retain itself in that position, and when an ordinary wrench is applied to the upper end of the bolt, or the nut thereon, rotation of the lower member is prevented by engagement of, the lug 6 with the adjacent surface of the crank-case. When the .bolt,has been" entirely unscrewed the lower member, whether the bolt itselfor the nut, is held by the wrench, 'and does not fall to the floor or the road-surface. V

Ifit be desired .to placethe bolt in the crank-case with the: nut on the. upper end I of the bolt, the Wrench of the present invention has the further advantage that it Will hold the bolt in place, in thehole in the crank-case, While the nut is being placed upon the upper end of the bolt.

\Vhile I have described my Wrench as particularly adapted for use in connection with the bolts used in a particular place in anautomobile, it will be apparent that the invention is not limited to that embodiment,

but may be'embodied in various other forms,

Within the nature of the invention as it is defined 1n the tolloivlng claims, according to the particular location and surroundings.

adjacent the bolt and to prevent rotation of the head; and adjustable means for engag ing another 'stat1onarybodyto' retain the head in engagement with the bolt or nut.

3. A Wrench comprising a head adapted to fit and hold a non-circular bolt-head :or

nut; an elongated body extending directly away from the head and adapted for engagenient with a stationary surface oppo- Sitethe bolt-head or nut, to retain the head in engagement therewith; and a lateral projection, from the head, to engage an adjacent stationary body andprevent rotation of the head.

et. A. Wrench comprising a head adapted-to fit and hold a non-circular bolt-head or nut;

an elongated body extending direotlyaway from the head and adapted for engagement With a. stationary surface opposite the bolthead or nut, the body comprising two members relatively movable to vary the length of thebody; and a lateral projection, from. the head, to engage an ad acent stationary body and prevent rotation :of the heada" ERCY. N, HODGKINSON:

Copies, of this patent may be obtained for five cents each, by addressingfithe Commissioner of Patents,

Washington, D. 0.? 

